Nut-lock



W. H. PAIGE.

NUT LOCK.

Patented Mar. 7,1882.

(No Medel.)

UNITED STATES PATENT OFFICE.

WILLIAM H. PAIGE, OF SPRINGFIELD, MASSACHUSETTS.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 254,685, dated March 7,1882.

Application filed November 14, 1881. (No model.)

market, and willv require no further operation by machinery afterleaving the forging-dies, except tapping for the bolt; and I accomplishthis by the means substantially as hereinafter described, andillustrated in the accompanying drawings, in which- Figure I is a planview of a nut with my invention made thereon. Fig. II is a modificationof the same. Fig. III is a side view of the same, with a centralvertical or transverse section of a washer to be used in connection withthe nut. Fig. IV is a plan view of the outer face of the nut as itappears when turned into place on a. bolt; and Fig. Vis a sectionthrough pieces of wood at the axis of a bolt, showing the nut turned upto abearin g against a washer upon the bolt.

In the drawings, A represents a nut, which may have any desired nunberof sides, and having upon one of its faces, just outside the holecontaining the thread, a conical-shaped fillet,as 1,0f general circularform in plan, whose inner diameter from inside to inside is the same asthe diameter of the hole through the nut, and is on the same plane, andwhose exterior on the side is beveled or inclined, as shown clearly inFig. III, or is substantially of that form.

Any desired number of openings, as 2, are made through this tillettransversely, said openings extending from the top of the fillet down orinward to the face of the nut, the bottom of the opening being upon thesameplane with the face of the nut upon which the llet is made, as shownclearly in Figs. I, Il, and III, and the ends of the fillet at theopenings, as2, are preferably beveled or inclined in the direction ofthe fillet, as shown in the drawings, the openings being wider at theapex of the fillet than at its base, this form of opening.;` beingfavorable to the die with which the opening is forged, as it will retainits shape, where1 as a die to forge a narrow opening with vertical sideswould not hold its form, as the small projection would soon becomeheated and be beaten out of shape.

In order that the fillet may make for itselfa seat in the washer orother article into which it is turned, I prefer in some cases to makethe ends of the llet at one side of each opening, as 2, a little thickerthan the adjacent end of the fillet on the opposite side of the sameopening, as shownrclearly in Fig. II, so that the outer sharp corner atthe thicker end of the fillet shall project a little farther from thecenter ofthe hole in the nut than any other point in the fillet. By thisconstruction, when the nut is turned onto a bolt and up to abearing, asthe fillet enters the washer, as shown in Fig. III, or the hole in thepiece against which itis to be turned, the sharp projecting corners ofthe fillet at 4 will cutaway the sharp corner of the washer at the holeand form a countersink or seat for the llet, and as the nut is turned upfirmly with more or less force, each section of the fillet, as 1, willbe forced inward against the bolt,and that portion of the thread in thenut which is on the inside of the llet will be made to gripe the threadof the bolt with great force, and when made in this manner the llet willalways form for itselfa seat, particularly as in hot-pressed nuts theeffect of the forging is to give to the surface of the as the openings,as 2, are forged, the sharp projecting corners are well adapted tocountersink the hole to a certain extent.

This invention being made upon or applied to the inner face of the nut,and the latter being no thicker than any ordinary nut, itisevidentthatitispartcularly applicableto hexagon nuts having au outerfinished face for use up- 011 finished work, and when turned on in placeno evidence of any locking mechanism would appear. When turned onto abearing the fillet will be forced in against the bolt to a degree quitesufficient to prevent the nut from being forced off by any jar, and yetthe thread of the bolt, and of the nut also, will remain uninjured,which is not` the case with many of the locknuts now in use.

It will not be necessary to use the washer, as

IOO

3, in connection with the nut., except when the nut is to be used inwood-work, as shown in Fig. V.

Having thus described my invention, what I claim as new is l. The nut A,comprehending the narrow fla-nge or fillet 1, made on one of its facesand provided with transverse openings, as 2, the interior of said iangeor iillet being made on the same plane as the bore of' the nut and itsexterior made smooth and inclined or beveled with reference to itsinterior, substantially as and for the purpose described.

2. In an improved lock-nut, a sectional fillet made on one of its faces,with openings, as 2, 15 between the sections, with the inner side ot thesections on tbe same plane with the bore of the nut, and the exteriorside ot' each section inclined to the interior side, and with one end ofeach section made thicker than the adjacent zo end of the next section,substantially as described.

WILLAM EL PAIGE.

Witnesses:

T. A. CURTIS, OHAs. H. Woon.

